code: def test_bbox_empty():
      assert mahotas.bbox(np.zeros((), np.bool_)).shape == (0,)
  
file_path: mahotas/mahotas/tests/test_bbox.py
imports: import numpy
  import mahotas
  import mahotas
  from mahotas import bbox
label_desc: Use image node_id 3 for calling a global function with example usage: test_bbox_empty() without return types